KAFKA-12260: Avoid hitting NPE for partitionsFor#10017
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abbccdda merged 6 commits intoapache:trunkfrom May 26, 2021
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KAFKA-12260: Avoid hitting NPE for partitionsFor#10017abbccdda merged 6 commits intoapache:trunkfrom
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chia7712
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+1 to eliminate null from Public APIs.
one (unrelated) question is left.
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just curious.
Is it possible that an existent topic has no partitions? If so, returning empty list may confuse users who querying nonexistent topic. Maybe we should throw UnknownTopicOrPartitionException for nonexistent topic and return empty list for existent topic.
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BTW, it is worth writing docs for this case (return empty list).
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I don't think you could have a topic with 0 partition.
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@abbccdda Thanks for updating code. Two minor comments are left.
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@chia7712 Sounds good |
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…nups * apache-github/trunk: MINOR: Adjust parameter ordering of `waitForCondition` and `retryOnExceptionWithTimeout` (apache#10759) KAFKA-12796: Removal of deprecated classes under streams-scala (apache#10710) KAFKA-12819: Add assert messages to MirrorMaker tests plus other quality of life improvements (apache#10762) Update implementation.html (apache#10771) MINOR: Log constructor: Flip logical NOT for readability (apache#10756) MINOR: deprecate TaskMetadata constructor and add KIP-740 notes to upgrade guide (apache#10755) MINOR: Log more information when producer snapshot is written (apache#10757) KAFKA-12260: Avoid hitting NPE for partitionsFor (apache#10017) MINOR: add window verification to sliding-window co-group test (apache#10745) KAFKA-12800: Configure generator to fail on trailing JSON tokens (apache#10717)
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As mentioned in the ticket, returning
nullforconsumer#partitionsForis not a good client side agreement. Addressing this problem by returning the empty list instead.Committer Checklist (excluded from commit message)